Lab 3

Analogue Electronics Lab 3

Part 1) Soldering

Part 1a) How to use the Soldering Iron

First, turn on the soldering iron, and set the temperture inbetween 4 and 5 on the knob. Always hold the soldering iron by the padded black handle, DO NOT touch any medal portion of the iron above the balck handle(it will burn). Wait about 5 minutes for the iron to heat up, and make sure you have solder on hand and ready to apply to your iron/metal that you would like to solder. While using the iron, if the tip is black make sure you clean/wipe the tip of the iron on the sponge next to the soldering iron. To use the iron, you should apply(slowly) a little bit of coiled solder to the tip of the iron. The solder will melt and seep into the port you are attempting to solder. 

Part 1b) After using the Soldering Iron

When you are finished soldering, wipe the tip of the iron on the sponge. DO NOT hand the soldering iron to the person using it next. DO NOT set the soldering iron on the table for the next person using it. Once you have cleaned the tip of the iron, place the iron back into the holster.

Part 2) Current and Power

2a) Setting the multimeter

When using the multimeter, make sure that the red lead is plugged into the input for “A”(for Amps), so that the multimeter can test for current. 

2b) Power through a resistor

Ohm’s Law is V = IR where V is volts, R is resistance in ohms, and I is current in amps (amperes).

Power is determined P = VI where P is power in watts, V is volts, and I is current in amps.

All the resistors in your resistor kit are 1/4 watt, meaning they can withstand up to 1/4 watt of power before they overheat and destroy themselves.

Below is the single smallest resistor I can use with just my battery connected to ground:

The smallest resistor I can use from my resistor kit would be the 470 Ohms Resistor.

Part 3) Kirchoff’s Current Law

Here are my calculations: